设
均为正数,且
.
(1)证明:
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4ce85547266d66174062f1700fe1e2.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ee79d588c459ae4ca749e7b12d844b.png)
更新时间:2020-03-04 20:24:16
|
【知识点】 由基本不等式证明不等关系解读
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解答题-证明题
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适中
(0.65)
名校
解题方法
【推荐1】已知
,
,
.
(1)求证:
;
(2)若
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(2)若
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您最近一年使用:0次
解答题-证明题
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适中
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【推荐2】已知正数a,b,c满足
.
(Ⅰ)求
的最小值;
(Ⅱ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a57e060f61f7efa54982bda67db483a.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d2eda7a03b04d83d58acecc4d00b92.png)
(Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c1e85ac6cf72c81f63020ff377bc82.png)
您最近一年使用:0次